The naval marine business of Rolls-Royce brings together Rolls-Royce marine gas turbines, diesel engines and nuclear plant, with Bird-Johnson and Kamewa controllable and fixed pitch propellers, Kamewa water jets, Brown Brothers stabilisers and Michell Bearings propeller shaft and thrust bearings. A full range of Clarke Chapman Replenishment at Sea systems completes the capability available to navies worldwide. This technological strength and an unrivalled range of products and services gives Rolls-Royce the ability to design, build, deliver and support through-life, fully integrated ship systems, tailored to meet specific customer requirements.

CLEAN, QUIET AND FUEL EFFICIENT GAS TURBINES AND DIESELS

Today Rolls-Royce powers more than thirty navies around the world with marine gas turbines and diesel engines in the 3MW to 50MW power band.

The 19.5MW Spey is a complete marine propulsion package, in service in nine ship classes. Other Rolls-Royce gas turbine packages include the 2.6MW Eurodyn, the Allison 501KF and the 5.4MW to 7.8MW Allison 601KF - ideal for corvettes and fast patrol craft. Top of the power range is the 50MW Trent, ideally suited to the developing fast freight market, for both civil and military transport.

The WR-21, rated at 25MW is the first production aeroderivative gas turbine to incorporate compressor intercooling and exhaust gas recuperation, for outstanding fuel economy. In contrast to simple cycle machines the WR-21 has low specific fuel consumption at both low and high power levels, giving operators fuel efficiency characteristics comparable to a diesel.

Medium speed diesels from 3MW to 10MW are available for propulsion or power generation.

ENGINEERING EXCELLENCE

Since managing the procurement of Britain's first submarine pressurised water reactor in 1959, Rolls-Royce - the Design Authority for all UK submarine nuclear plants, has supplied and supported all the reactor systems and equipment that power the Royal Navy's submarine flotilla. This operational and support experience has lead to the development of the improved plant for the new ASTUTE class submarines, designed to operate for the full platform life, eliminating costly reactor refuelling.

MOTION CONTROL

The Brown Brothers range of retractable and non-retractable stabilisers improve weapons performance and sea keeping in severe weather conditions. Naval steering gear includes actuator, rotary vane and ram type with a torque capability from 2 –1700 tonne meters.

PROPULSORS TO MEET ANY SPECIFICATION

Rolls-Royce with its Bird-Johnson and Kamewa products, is the world leader in the design and manufacture of combat capable propulsion systems. Controllable pitch and fixed pitch propeller designs are available to match all vessel-operating profiles. These include the most advanced skewed designs for high speed/silent or extremely silent operation with shock resistance and low magnetic signature:

Water jets - For medium speed and high-speed patrol craft, Kamewa waterjets are the acknowledged technical leader and the natural choice for stealth, speed and manoeuvrability
Podded propulsors - With the recent move to electric propulsion, the Mermaid™ electric pod propulsion system for powers of 5MW – 25MW is an attractive option

INTEGRATING NEW PRODUCTS AND NEW IDEAS

The integrated propulsion systems approach of Rolls-Royce delivers a complete service, from initial concept studies, through to equipment selection, systems integration, procurement, supply and in-service support. Providing a competitive solution that delivers the lowest through-life costs is the prime objective.

Rolls-Royce is also a major industry player in the development of technology associated with Integrated Full Electric Propulsion systems and is developing a 3MW permanent magnet propulsion motor.

OPTIMISING SUPPORT FOR NEW AND EXISTING PLATFORMS

To keep platform availability at levels that do not undermine operational capability, Rolls-Royce has developed a skills base with a strong emphasis on predictive data management, system condition monitoring and project management. Services are linked by flexible engineering support information systems, which helps identify cost drivers and target remedial effort effectively.

Integrated logistic support analysis can be provided at all stages of platform life, including the concept and design phase.